Kaoru remarried with a man who had a child half a year ago and became the mother of Atsushi, her son of age. She wanted Atsushi to have various experiences, but he was always cooped up in his room playing games. One afternoon when her husband was not home, Kaoru asked Atsushi, "Aren't you still a virgin?" Surprised by Kaoru's sudden statement, Atsushi managed to 'graduate' from being a virgin just a few minutes later. It was an incredibly pleasurable first time that all men would envy...
